| Abstract: | Techniques and mechanisms for providing a value from physically
unclonable function (PUF) circuitry for a cryptographic operation of a
security module. In an embodiment, a cryptographic engine receives a
value from PUF circuitry and based on the value, outputs a result of a
cryptographic operation to a bus of the security module. The bus couples
the cryptographic engine to control logic or interface logic of the
security module. In another embodiment, the value is provided to the
cryptographic engine from the PUF circuitry via a signal line which is
distinct from the bus, where any exchange of the value by either of the
cryptographic engine and the PUF circuitry is for communication of the
first value independent of the bus. |